“In addition, privacy experts have raised questions about Facebook’s extensive data collection practices and whether any of the data collected by Facebook is being used for purposes that do or should subject Facebook to the Fair Credit Reporting Act.”

In light of these concerns, the committee wants Zuckerberg to outline how the Facebook cryptocurrency, referred to under the codename of “Project Libra,” would work; what outreach Facebook has done to financial regulators; and what users can expect in terms of privacy and consumer protection.

More broadly, the committee has asked Facebook to share what consumer financial information has been shared by banks and other financial institutions; what Facebook does with that information (including whether that information is shared or sold to other third parties); whether Facebook has credit rating and other personal information about individuals; and how Facebook avoids violating the Fair Credit Reporting Act.

Little is known about Project Libra. The company quietly began building up a blockchain research team last year, headed up by vice president and former Coinbase board member David Marcus.